Lock



July 13, 1948. A. WARTIAN 2,445,285.

LOCK

Filed March 21, 1946 2 Sheets-Sheet 1 A TTO/P/VEY July 13, 1948. WAR-HAN v 2,445,285

LOCK I Filed March 21, 1946 2 Sheets-Sheet 2 i l1 nk wmaggg INVENTOR 41/ 0 l/Va'rhkzn from. between the Patented July 13, 1948 UNITED: STATES/ PATENT OFFICE LOCK I Avagim Wa1-tian, Detroit, Mich. Application March 21, 1946, seam... 556,001

6 Claims. (01. 292-49) This invention relates to improvements in locks. It is an object of the invention to provide a simple form of look includingspring urged Jaws on opposite sides of the latch which are normally held by the latter at an inclination to one another and contiguous to correspondingly inclined faces on a striker plate.

Another object of the invention is to provide such a lock wherein a projection is formed on the striker plate which moves the latch as the door is being shut, and this latch .movementpermits the spring urged jaws .to turn so that upon opening movementof the door they movefreely inclined faces of the striker plate.

A further object of the invention is to provide a lock including a latch for engagement with a striker plate and a bolt mounted in the. lock for movement parallel withthe latch and having forwardly extending arcuate members adapted to travel along oppositely curved paths through slots formed in the striker, plate so that even if the hinges are removed from the door it is virtually impossible to move the hingedside of the latter sufliciently from the door frame to obtain ingress or egress. g g

Having thus briefly stated some of the objects and advantages of the invention I will now describe itin detail with the aid of the accompanying drawings, in which: I i g I Figure 1 is a side .elevation of. the lock with the cover largely broken away and; showing parts in sections,

Figure 2 is a front View of the lock ignoring the striker plate.

Figure 3 is a partial side viewjshowing the latch retracted, and

Figure 4 is airont view of Figure 3. v

Figures 5 and 6 are sections on the line 5-5 and 6-6 respectively of Figure'l.

Figure 7 is a view on the line 1-1 of Figure 1.

- Figures 8, 9 and are sections on the lines 88, 9 -.-9,and Ill-40 respectively of Figure 1. Referring tothe drawings, [designates a casing having a removable cover} secured on one side thereof by screws 3. A removable plate 4, the ends of which pr'ojectbeyond the ends of the casingfor attachment to a door (not shown),

.forms on edge face of the said casing and has lugs 4a thereonthrough which screws 5 extend screws also passing through one casing side.

Formed integral with the removable plate l intermediately of its height and projecting for.-

element'i one face 1 of which is disposed at right angles to the outer. face of the said plate. l-The element 6 is slotted at 8 centrally of its height through its face 7.

' 'Mounted'for reciprocating movementin the urge the latch outwardly through the opening I l. 'Onth'e extremity ofthe slide 9 remote from the latch I0 is a contact plate I4 for engagement by an arm i5'extendingfr0m an annular rotary plug 16-. Any conventional means may be employed for turning the plug and imparting movement to the arm 15 to retract the slide 9 and draw the latch l0 inwardly; for the sake of simplicity the plug I6 is shown provided merely with a multisided axial aperture" and its apertured ends are 'rotatably mounted'in openings formed through the cover 2 and through the opposite side of the casing 'I. Pivoted on a screw Na in engagement with the plate! on each side of the latch I0 is a jaw ll. Each 'jaw has a slot l9 formed in its face which rests against the plate 4 andprojecting outwardly .50 in threaded engagement therewith, the said from the latterand extending into the slot i9 is a pin 20. Mounted in the slot [9 with one. extremity bearing against one end of the latter and its opposite extremity against one side of the pin 'Zll is a helical spring 2| which tends to turn the jaw about its axis l8a toward the latch Ill. The opposite side of the latch contacted by the opposed inner faces of the jaws [8 are so shaped that as the latch moves outwardly through the opening ii the jaws are turned outwardly about their axes against the'tensionof the springs 2|, then the outer sides lb of the jaws, which are fiat, are outwardly inclined from their pivoted extremities to liecontiguous to and parallel with opposite incline'd'wal'ls 22a of a recess 22 in a striker plate 23 which is adapted to be mounted on a door frame (not shown). I denotes opposed inwardly projecting fingers 'on the jaws l8 to limit positively the outward rotary movement ofthe jaws. I I

Formed integral with the base of the recess 22 is an extension' zl which is positioned opposite the element 6 when the door (not shown) on which the casing is mounted is shut. At that time the extension covers the slot 8 and a keeper 25 formed on the base of the recess and extending over the extension 24 projects into the slot 8. In order that the latch I may move freely over the keeper 23 as the said latch travels outwardly through the opening II the latter has its keeper contacting extremity rounded as shown at Illa. Formed integral with the inner opposed faces of the jaws l8 and of lesser height than the latter are inwardly projecting guides'26 the undersides of which ride upon the plate 4. The inner opposed faces of the guides are substantially parallel when the latch I0 is outwardly projected,

and as the latch is retracted, due to the form of the opposite latch sides and the actionof the retracted the outer faces of the jaws are parallel spring 2|, above described, these guides are 7 turned so that they are inclined toward one an-' other from their pivoted ends, and then, of course, the inner opposed faces of the jaws above the guides are parallel. Then these inner upper faces of. the guides 26- form ways upon which the keeper 25 slides between the inner parallel sides of the jaws. As soon as the keeper 25 has passed over the adjacent end of the latch 10, during the locking operationfthe latch is returned to its normal outwardly projecting position by the sprin [3 and byithis movement of the latch the jaws are moved to their outwardly inclined positions so that their outer faces 18?) move into engagement with the inclined walls 22a of the recess 22 in the striker-plate 23, so that the lock is held positively in engagement with the striker plate until the latch I0 is again withdrawn in to -th8.C9;Slll'g and the jaws l8 are turned inwardly by the springs 2| to their striker plate releasing positions.

Mounted alsov for movement in the casing I parallel with the slide!) is a member 30 which in the present instance .is slottedintermediately 1 of its length to receive a' guide element 3| integral with one side of the said casing. 'Formed also inon'e longitudinal margin of the'member 30, which is held against accidental movement by a spring 39, a recess-32 into which an arm 33 extending from a rotary plug-'34 projects. Any means may be provided for turning the plug; in the present instance, for the sake of simplicity, an axial multi-si'ded openingis formed through the plug Iandone apertured end thereof isl rotatably mounted in an opening formed through the cover 2 and its opposite apertured end isrotatably'mounted in the opposite side of the casing l. 'Pivoted on the member 30 are two arcuate bolts 35 whichlare forwardly and outwardly curved from one another, and formed through theplate l are longitudinally spaced openings 36 through each of which one of the bolts extends. Through the striker plate 23 opposite the plate openings ;36 other openings 3'ia're provided. When the member 30 is moved toward the plate 4,-by. rotation of the plug 34 and movement of the arm 33, the bolts-35 are outwardly project-ed through the openings 31 along a curved path to render their detachment .trom the striker plate extremely difficult. By spacing the bolts 35 some distance above and beneath the latch l0, andalso due to the fact that the openings 3'! are well spaced from one another the locking means (that is the bolts 35 and the latch l0) render it practically impossible, even after. removal of t e hinges, to move azdoor sufliciently far from its frame to permit access for anyone however small.

' -While in the foregoing the preferred embodiment of the invention has been described and and when the latch is outwardly projected the said outer-faces are inclined to one another, in

:combination with a striker plate having opposed inclined walls thereon between which the jaws are'adapted to be inserted, the inclination of the Walls corresponding to that of the outer sides of thejawswheninclined to one. another whereby saidjaws are engaged by said walls when the lock is closed.

2. The combination :in claim- 1, including a keeper on Ithestriker platezpositioned. to engage and retract the latch thereby turning the. jaws so that their outersi'desvare parallel for entry between said walls as the lock is being closed.

3. The combinationin claim 1, including a keeper on the striker-plate positioned and shaped to obstruct passage of the latch when the latter is outwardly projected and thelock is shut.

4. The combination in claim 1, including a keeper on the striker plate to engage and retract the latch as the lock is being closed to turn the jaws for entry between the walls, and guides on the inneropposed sides of the jaws for passage of the keeper thereover prior to its engagement with the latch as the lock is being closed.

5. A look including a casing having an opening formed through one side, a latch mounted for movement through said-opening, means urging the latch "outwardly; means for retracting the latch, .jawspivotedon the outer face of the casing on opposite sides of the latch, means retaining each jaw in contact with one side of the latch, the latter having its opposite sides so shaped that uponmovement of the latch the jaws are turned about their axes so that when the latch is retracted the outer faces of the jaws are substantially parallel and when the latch is outwardly projected the outer faces of the jaws are inclined to one another, in combination with a striker plate having a recess formed across it, the opposite walls of the recess being inclined to correspond to the inclination of the jaws when .the latch is outwardly projected whereby. when the latch is outwardly projected said jaws are adapted to be engaged by said walls.

6. A lock including a casing having an opening through one side, a latch movable through the opening to retracted or outwardly projected positions, means for moving the latch, jaws pivoted onthe outer" face of the casing and bearing againstopposite sides of the latch, spring means urging each jaw against one side of the latchft'he latter being so shaped that outward movement thereof turns the jaws outwardly so (that their outer faces are inclined to one another, in combination with a striker plate having a recess therein opposite 'Walls of which are inc'lined' forenga'gem'ent by the outer sides of the jaws when" the. latter "are inclined to one another, and means onthestriker'plate for re- 5 6 tracting the latch prior to the entry of the jaws UNITED STATES PATENTS into the recess as the lock is being closed.

AVAGIM WARTIAN- Number Name Date REFERENCES CITED 539,653 Stevens May 21, 1895 5 1,639,862 Shilling Aug. 23, 1927 The following references are of record in the 2,210,989 Sutherland Aug. 13, 1940 file of this patent: 

